email a friend
printable version
NT
Japanese Woodpigeon Columba janthina

Justification
This species is classified as Near Threatened because it has a small and declining range, which is not considered to be severely fragmented, and probably has a moderately small population, which is thought to be declining as a result of hunting and logging.

Taxonomic source(s)
del Hoyo, J.; Collar, N. J.; Christie, D. A.; Elliott, A.; Fishpool, L. D. C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Barcelona, Spain and Cambridge UK: Lynx Edicions and BirdLife International.

Distribution and population
Columba janthina is an uncommon and local resident in Japan, on small islands off southern Honshu, Shikoku and Kyushu, south through the Nansei Shoto islands to the Yaeyama Islands and the Izu Islands to the Ogasawara and Iwo Islands (BirdLife International 2001). It occurs locally on small islands off the south coast of South Korea, and it has been recorded (presumably as a vagrant) in eastern Russia, Shandong, mainland China and Taiwan (China). Although it is still relatively common on the Izu Islands, it has apparently declined there since the 1950s, and it is thought to have declined on Okinawa during the 1980s because of forestry activities. There are estimated to be only 30-40 individuals of subspecies nitens on the Ogasawara Islands, but the status of this subspecies on the Iwo Islands remains unknown (per Otani Chikara in litt. 2005, Simba Chan in litt. 2005).

Population justification
The global population size has not been quantified, but the species is described as uncommon (Gibbs et al. 2001). National population estimates include:

Trend justification
There are no data on population trends; however, the species is suspected to be in decline owing to habitat degradation and hunting.

Ecology
This species inhabits dense subtropical forest and warm temperate evergreen broadleaved forests, and is heavily dependent on mature forest. It feeds mainly on Camellia seeds, but is thought to take the seeds and fruit of other plants, and although it is mainly arboreal it will also take fallen seeds from the ground (Gibbs et al. 2001). Breeding occurs from February to September, and females lay a single egg in a tree-hole or amongst rocks (Gibbs et al. 2001).


Threats
It is thought that hunting and deforestation are causing this pigeon to rapidly decline.

Conservation Actions Underway
There is a small captive population of subspecies nitens at Ueno Zoo, Tokyo, where successful breeding has occurred as part of a conservation programme (Otani Chikara in litt. 2005).
Conservation Actions Proposed
Survey to assess population size. Regularly monitor to determine population trends. Investigate its tolerance of degraded forest and the extent of hunting by local residents. Control hunting where possible, perhaps using awareness campaigns. Protect significant areas of intact forest on a number of islands across its range. Conduct research into the taxonomic status of its subspecies. Investigate the status of subspecies nitens on the Iwo Islands.

References
BirdLife International. 2001. Threatened birds of Asia: the BirdLife International Red Data Book. BirdLife International, Cambridge, U.K.

Brazil, M. 2009. Birds of East Asia: eastern China, Taiwan, Korea, Japan, eastern Russia. Christopher Helm, London.

Brazil, M. 2009. Birds of East Asia: eastern China, Taiwan, Korea, Japan, eastern Russia. Christopher Helm, London.

Gibbs, D.; Barnes, E.; Cox, J. 2001. Pigeons and doves: a guide to the pigeons and doves of the world. Pica Press, Robertsbridge, U.K.

Further web sources of information
Detailed species accounts from the Threatened birds of Asia: the BirdLife International Red Data Book (BirdLife International 2001).

Explore HBW Alive for further information on this species

Search for photos and videos, and hear sounds of this species from the Internet Bird Collection

Text account compilers
Benstead, P., Mahood, S., Taylor, J.

Contributors
Chan, S., Otani, C.

IUCN Red List evaluators
Butchart, S., Symes, A.

Recommended citation
BirdLife International (2014) Species factsheet: Columba janthina. Downloaded from http://www.birdlife.org on 23/12/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 23/12/2014.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.

Key facts
Current IUCN Red List category Near Threatened
Family Columbidae (Pigeons, Doves)
Species name author Temminck, 1830
Population size Unknown mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 6,200 km2
Country endemic? No
Links to further information
- Additional Information on this species